Lab 34-2: 1. The general trend for bone density as a person ages is a steady decline as years pass. This study shows that every decade‚ males and females bone density slowly decreases. 2. Between the ages of 20-50 females lose about 11% of their bone density and males lose about 13% of their bone density. Males do in fact lose more density then females but they lose it at a more stable and steady rate. Females lose less density at more unstable rate going from about 6% (40-50) to about 9%
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Ciara Clark and Caroline Bedenbaugh 4A Density Lab Objective : The purpose of this lab is to observe and explore the relationship of a substance’s volume vs. its mass‚ and to calculate an object’s density by using the relationship of its mass and volume. Data Tables : Data: Density of Water Run Mass of graduated cylinder volume of water added mass of water 1 25.28 g 0.00 mL 0.00 g 2 26.15 g 1.00 mL 0.87 g 3 27.18 g 2.00 mL 1.90 g 4 28.19 g 3.00 mL 2.91 g 5 29.13 g 4.00 mL
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Labset Five Worksheet 1. List five environments where you are likely to find microbial growth: Lakes‚ soil‚ oceans‚ tundras‚ deserts 2. How do microbes contribute to soil fertility? The decomposition that microbes take part in help release mineral nutrients‚ such as potassium and nitrogen‚ from dead organic matter and allowing primary producers the nutritional access. They also produce CO2 and CH4 to release into the soil and atmosphere. 3. Describe the growth you observed in each of your
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Observations of Chemical Changes Purpose/Hypothesis: To observe how acids react with bases and examine reactions of common household cleaners and the macroscopic changes these chemicals undergo. I expect for each solution to react differently when mixed with acids and bases. Procedure: I have a well-plate-96‚ a piece of white and black paper‚ and the chemicals from the Observation of Chemical Changes Experiment Bag. I used a different well for each combination of solutions. I placed two
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equipment to dilute a sugar water solution. It also created solutions containing varying levels of concentrations and densities. Equations were used to figure the molecular weight of the sugar‚ and the number of moles of sugar in the volumetric flask. There was also an equation to figure the Molarity‚ as well. As a result of the experiment‚ I now have a better understanding of the density of a concentration‚ and what Molarity is . Observations Data Table 8: Initial Concentration Chemical Mass (g)
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Soil Porosity & Density Objective: To determine if the porosity of soil is related to the density. Hypothesis: I think that that the porosity of soil is related to the density because the higher the density of the sand the lower the porosity of the sand‚ which are both componets for the water to rise. Materials: • Sand and Loam samples • 2 large containers • Plastic cups • Water • Scale Procedure: Loam 1) The loam without the water was fresh ‚ it had different shades of black‚ and
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Lab Report: [Liquid Density] Your Name: ______________________________________________________________ 1 Purpose of this Lab What is the goal of this lab? What question are you trying to answer‚ or what problem are you trying to explain? | | |
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Text: Measuring economic activity There are a large number of statistics produced regularly on the operation of the world’s major economies. The UK’s economy is no exception in this respect. You will probably have noticed that often the headlines in newspapers or important items on television news programmes relate to economic data and the implications for individuals and businesses. A prime example of this occurs when interest rates are increased: the media responds by highlighting the adverse
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Denisty – Solids and Liquids Part 1: Density Background Information: The density of an object is how much “stuff”‚ or molecules‚ a substance is made of. Density is how tightly packed the molecules are. To calculate the density of a substance we need to know the mass (weight) of the substance and the volume (how much space) of the substance. Mass is determined by weighing an object. Volume of regular shaped objects is calculated by measuring length (L)‚ width (W)‚ and height (H) in
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Performance Task no. 4.1 Pressure Principle I. Introduction Why is theater seat so much more comfortable than a bicycle seat? One of the main reasons any seat is comfortable is the pressure it exerts on your body. This performance task aims to know the importance and application of pressure. Pressure is defined as the force acting perpendicular to a unit area. It is the result of a force distributed over an area. A theater seat’s large padded seat and back offer a larger area to support your
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